.container {
    width: 100%;
    height: 100%;
}

.center-block {
    width: 520px;
    height: 600px;
    margin: 50px auto;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 5px 5px 5px #ccc;
    background: #C07143;
}

.title {
    height: 60px;
    line-height: 60px;
    width: 100%;
    float: left;
    color: #ffffff;
    text-align: center;
    font-size: 40px;
    font-weight: bolder;
}


/*计算器容器*/

.calu-container {
    width: 480px;
    height: 490px;
    float: left;
    margin-left: 20px;
    border-radius: 10px;
    box-shadow: 3px 3px 3px #663C20;
    background: #E6E6E6;
}

table {
    margin: 10px 15px;
}

.result {
    width: 450px;
    height: 80px;
    line-height: 80px;
    border-radius: 10px;
    background: #FCFDEA;
    text-align: right;
    font-size: 40px;
    outline: 0;
}

.btn {
    margin: 15px 0;
    width: 80px;
    font-size: 25px;
}

.equal {
    height: 130px;
}

.zero {
    width: 170px;
}

.footer {
    width: 100%;
    float: left;
    height: 40px;
    line-height: 40px;
    padding-right: 20px;
    text-align: right;
}
